Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/sh/mm/cache-sh3.c b/arch/sh/mm/cache-sh3.c
new file mode 100644
index 0000000..838731f
--- /dev/null
+++ b/arch/sh/mm/cache-sh3.c
@@ -0,0 +1,100 @@
+/*
+ * arch/sh/mm/cache-sh3.c
+ *
+ * Copyright (C) 1999, 2000 Niibe Yutaka
+ * Copyright (C) 2002 Paul Mundt
+ *
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <linux/init.h>
+#include <linux/mman.h>
+#include <linux/mm.h>
+#include <linux/threads.h>
+#include <asm/addrspace.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/processor.h>
+#include <asm/cache.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/pgalloc.h>
+#include <asm/mmu_context.h>
+#include <asm/cacheflush.h>
+
+/*
+ * Write back the dirty D-caches, but not invalidate them.
+ *
+ * Is this really worth it, or should we just alias this routine
+ * to __flush_purge_region too?
+ *
+ * START: Virtual Address (U0, P1, or P3)
+ * SIZE: Size of the region.
+ */
+
+void __flush_wback_region(void *start, int size)
+{
+ unsigned long v, j;
+ unsigned long begin, end;
+ unsigned long flags;
+
+ begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
+ end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
+ & ~(L1_CACHE_BYTES-1);
+
+ for (v = begin; v < end; v+=L1_CACHE_BYTES) {
+ unsigned long addrstart = CACHE_OC_ADDRESS_ARRAY;
+ for (j = 0; j < cpu_data->dcache.ways; j++) {
+ unsigned long data, addr, p;
+
+ p = __pa(v);
+ addr = addrstart | (v & cpu_data->dcache.entry_mask);
+ local_irq_save(flags);
+ data = ctrl_inl(addr);
+
+ if ((data & CACHE_PHYSADDR_MASK) ==
+ (p & CACHE_PHYSADDR_MASK)) {
+ data &= ~SH_CACHE_UPDATED;
+ ctrl_outl(data, addr);
+ local_irq_restore(flags);
+ break;
+ }
+ local_irq_restore(flags);
+ addrstart += cpu_data->dcache.way_incr;
+ }
+ }
+}
+
+/*
+ * Write back the dirty D-caches and invalidate them.
+ *
+ * START: Virtual Address (U0, P1, or P3)
+ * SIZE: Size of the region.
+ */
+void __flush_purge_region(void *start, int size)
+{
+ unsigned long v;
+ unsigned long begin, end;
+
+ begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
+ end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
+ & ~(L1_CACHE_BYTES-1);
+
+ for (v = begin; v < end; v+=L1_CACHE_BYTES) {
+ unsigned long data, addr;
+
+ data = (v & 0xfffffc00); /* _Virtual_ address, ~U, ~V */
+ addr = CACHE_OC_ADDRESS_ARRAY |
+ (v & cpu_data->dcache.entry_mask) | SH_CACHE_ASSOC;
+ ctrl_outl(data, addr);
+ }
+}
+
+/*
+ * No write back please
+ *
+ * Except I don't think there's any way to avoid the writeback. So we
+ * just alias it to __flush_purge_region(). dwmw2.
+ */
+void __flush_invalidate_region(void *start, int size)
+ __attribute__((alias("__flush_purge_region")));